docs: register Coach Client Connect extension number (1107)

docs/options.md

@@ -268,3 +268,7 @@ with info about your project (name and website) so we can add an entry for you.
 1. Protoc-gen-sanitize
    * Website: https://github.com/Intrinsec/protoc-gen-sanitize
    * Extension: 1102-1106
+
+1. Coach Client Connect (planned release in March 2021)
+   * Website: https://www.coachclientconnect.com
+   * Extension: 1107